PolyPen

The PolyPen RP 410 is a sophisticated handheld instrument that incorporates an internal Xenon incandescent lamp and measures spectral reflectance of leaves.

The PolyPen RP 410 firmware calculates formulas of commonly used reflectance indexes (e.g. NDVI, NDGI, PRI etc.) and displays these on its touch screen instantaneously as graphs or data sheets. All data are stored as full spectra in the Polypen's memory and are available for customised calculations and transfer to a PC.

Complete system for measurement of spectral reflectance on leaves

Automatic calculation of all commonly used reflectance indices

Custom indices calculation possible

Rugged and compact device for lab and field applications

Programmable via intuitive touch-screen use

Leaf clip for non-destructive, in-situ measurements

Comprehensive software for data processing

USB communication for data transfer

PolyPen RP 410 features a complete system for measurement of spectral reflectance from leaves. The device is equipped with an internal light source (Xenon incandescent lamp 380 - 1050 nm) and with one type of detector (UVIS or NIR, read more in Versions ).

Polypen RP 410 incorporates formulas of commonly used reflectance indices (e.g. NDVI, NDGI, PRI etc.) and enables programming customized indices. Measured data are instantly displayed in graphs or data sheets on the device screen display. They are also stored as full spectrum in the device memory for later re-collection or transfer onto a PC. Li-Ion rechargeable battery, splash-proof case and integrated GPS module make PolyPen RP 410 an ideal tool for field experiments.

POLYPEN MEASURES Absorbance - calculated data using the following formula A=log(I0/I), where I0 is reference light intensity and I is measured light intensity

Transmittance - calculated data using the following formula T= I/ I0, where I0 is reference light intensity and I is measured light intensity

LIST OF CALCULATED VEGETATION INDICES

Normalized Difference Vegetation Index (NDVI) ▪

Simple Ratio Index (SR) ▪

Modified Chlorophyll Absorption in Reflectance Index (MCARI1)

Optimized Soil-Adjusted Vegetation Index (OSAVI) ▪

Modified Chlorophyll Absorption in Reflectance Index (MCARI)

Transformed CAR Index (TCARI)

Triangular Vegetation Index (TVI)

Zarco-Tejada & Miller Index (ZMI) ▪

Simple Ratio Pigment Index (SRPI)